package interface_test;

public interface ITest {
    public static final double PI = Math.PI;

    public default void fun1() {
        System.out.println("接口中的默认方法！");
    }

    ;

    static void fun3() {
        System.out.println("接口中的静态方法！");
    }

    ;

    public abstract void fun2();
}

